Holly Willoughby said her time hosting I’m A Celebrity was a “one-off bit of heaven”, in a clear sign she will not return next year.

Holly, 37, fronted the show with Declan Donnelly, 43, standing in for regular host Anthony McPartlin, 43. Rumours are rife that she could take on the role again in 2019, as the show enjoyed record ratings.

But ITV sources told the Mirror this is extremely unlikely as Ant is set to return.

Asked about her time in Australia, Holly said yesterday: “I’ve had the best time. It’s like nothing I’ve ever done before.

“Everything about it is completely bonkers. The jungle is beautiful, the studio is beautiful... but everything wants to eat you.”

Holly and Dec (Image: ITV/REX/Shutterstock)

The pair impressed together (Image: ITV/REX/Shutterstock)

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Speaking on a live link with ITV’s This Morning from the show’s wrap party on the Gold Coast, she added: “But I’ve really, really loved it. It’s been... a one-off bit of heaven.”

The show’s final attracted a peak audience of 12.1 million viewers.

On This Morning some time ago, Holly revealed how she got the gig, saying: "The weird thing is when I first found out it was exciting. It's kind of bittersweet.

"You're working out the logistics of how you'll go, how long for, taking the kids. They are coming with me. I spoke to the school. Mum and Dad are coming out.